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arm64: dts: imx91-var-dart-sonata: add RGB enable supply for PCA6408

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RGB enable pin, labeled as RGBSEL, is a board-level enable signal on
the Sonata carrier board.

The two PCA6408 GPIO expanders depend on this signal being asserted, so
model it as a fixed regulator and use it as their vcc-supply.

Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
This commit is contained in:
Stefano Radaelli 2026-03-31 11:21:12 +02:00 committed by Frank Li
parent 46e2e3a1c9
commit 67efe58b4a
1 changed files with 9 additions and 0 deletions
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9
arch/arm64/boot/dts/freescale/imx91-var-dart-sonata.dts
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@ -90,6 +90,13 @@ reg_vref_1v8: regulator-adc-vref {
regulator-max-microvolt = <1800000>;
};
reg_rgb_sel: regulator-rgb-enable {
compatible = "regulator-fixed";
regulator-name = "RGBSEL";
gpio = <&pca9534 7 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
reg_usdhc2_vmmc: regulator-vmmc-usdhc2 {
compatible = "regulator-fixed";
pinctrl-names = "default";
@ -195,6 +202,7 @@ pca6408_1: gpio@20 {
#gpio-cells = <2>;
interrupt-parent = <&gpio1>;
interrupts = <10 IRQ_TYPE_LEVEL_LOW>;
vcc-supply = <&reg_rgb_sel>;
};
pca6408_2: gpio@21 {
@ -204,6 +212,7 @@ pca6408_2: gpio@21 {
#gpio-cells = <2>;
interrupt-parent = <&gpio1>;
interrupts = <10 IRQ_TYPE_LEVEL_LOW>;
vcc-supply = <&reg_rgb_sel>;
};
pca9534: gpio@22 {